A3 L4-2.0L Turbo (BPY) (2006)
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Motronic Engine Control Module (ECM) J220.
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Using a Multimeter , check the Brake Light Switch F / Brake Pedal Switch F63 electrical harness connector to the Motronic Engine Control
Module (ECM) J220 electrical harness connector T94 for open an circuit.
Brake Light Switch F / Brake
Motronic Engine Control Module
Pedal Switch F63 electrical
(ECM) J220 electrical connector
harness connector terminals
T94 terminals or test box sockets
3
47
4
25
Specified value: 1.5 Ohms Max.
If the specified value was not obtained:
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Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
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Check the wiring connection for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and voltage supply was not OK:
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Replace the Motronic Engine Control Module (ECM) J220.
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Install the drivers side storage compartment.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Modes 01 - 09/Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase the DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing
and Procedures/Diagnostic Mode 04: Reset/Delete Diagnostic Data
3. If the DTC memory was erased, generate readiness code.
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End of diagnosis.